public IEnumerable <JsStatement> GetCodeAfterLastType(IEnumerable <JsType> types)
{
var scriptableAttributes = MetadataUtils.GetScriptableAttributes(_compilation.MainAssembly.AssemblyAttributes, _metadataImporter).ToList();
if (scriptableAttributes.Count > 0)
{
return new[] { (JsStatement)JsExpression.Assign(JsExpression.Member(_linker.CurrentAssemblyExpression, "attr"), JsExpression.ArrayLiteral(scriptableAttributes.Select(a => MetadataUtils.ConstructAttribute(a, null, _compilation, _metadataImporter, _namer, _runtimeLibrary, _errorReporter)))) }
}
;
else
{
return(EmptyList <JsStatement> .Instance);
}
}
public IEnumerable <JsStatement> GetStaticInitStatements(JsClass type)
{
return(!MetadataUtils.IsJsGeneric(type.CSharpTypeDefinition, _metadataImporter) && !MetadataUtils.IsResources(type.CSharpTypeDefinition, _attributeStore)
? type.StaticInitStatements
: EmptyList <JsStatement> .Instance);
}
private string GetRoot(ITypeDefinition type)
{
return(string.IsNullOrEmpty(MetadataUtils.GetModuleName(type, _attributeStore)) ? "global" : "exports");
}
private TypeOOPEmulationPhase CreateTypeDefinitions(JsType type)
{
string name = _metadataImporter.GetTypeSemantics(type.CSharpTypeDefinition).Name;
bool isGlobal = string.IsNullOrEmpty(name);
bool isMixin = MetadataUtils.IsMixin(type.CSharpTypeDefinition, _attributeStore);
bool export = type.CSharpTypeDefinition.IsExternallyVisible();
var statements = new List <JsStatement>();
statements.Add(JsStatement.Comment("//////////////////////////////////////////////////////////////////////////////" + Environment.NewLine + " " + type.CSharpTypeDefinition.FullName));
string typevarName = _namer.GetTypeVariableName(name);
if (type is JsClass)
{
var c = (JsClass)type;
if (isGlobal)
{
statements.AddRange(c.StaticMethods.Select(m => (JsStatement)JsExpression.Binary(ExpressionNodeType.Assign, JsExpression.Member(JsExpression.Identifier(GetRoot(type.CSharpTypeDefinition)), m.Name), m.Definition)));
export = false;
}
else if (isMixin)
{
statements.AddRange(c.StaticMethods.Select(m => (JsStatement)JsExpression.Assign(MakeNestedMemberAccess(name + "." + m.Name), m.Definition)));
export = false;
}
else if (MetadataUtils.IsResources(c.CSharpTypeDefinition, _attributeStore))
{
statements.Add(GenerateResourcesClass(c));
}
else
{
var unnamedCtor = c.UnnamedConstructor ?? JsExpression.FunctionDefinition(new string[0], JsStatement.EmptyBlock);
if (MetadataUtils.IsJsGeneric(c.CSharpTypeDefinition, _metadataImporter))
{
var typeParameterNames = c.CSharpTypeDefinition.TypeParameters.Select(tp => _namer.GetTypeParameterName(tp)).ToList();
var stmts = new List <JsStatement> {
JsStatement.Var(InstantiatedGenericTypeVariableName, unnamedCtor)
};
AddClassMembers(c, InstantiatedGenericTypeVariableName, stmts);
stmts.AddRange(c.StaticInitStatements);
stmts.Add(JsStatement.Return(JsExpression.Identifier(InstantiatedGenericTypeVariableName)));
var replacer = new GenericSimplifier(c.CSharpTypeDefinition, typeParameterNames, JsExpression.Identifier(InstantiatedGenericTypeVariableName));
for (int i = 0; i < stmts.Count; i++)
{
stmts[i] = replacer.Process(stmts[i]);
}
statements.Add(JsStatement.Var(typevarName, JsExpression.FunctionDefinition(typeParameterNames, JsStatement.Block(stmts))));
statements.Add(JsExpression.Assign(JsExpression.Member(JsExpression.Identifier(typevarName), TypeName), JsExpression.String(_metadataImporter.GetTypeSemantics(c.CSharpTypeDefinition).Name)));
var args = new List <JsExpression> {
JsExpression.Identifier(typevarName), _linker.CurrentAssemblyExpression, JsExpression.Number(c.CSharpTypeDefinition.TypeParameterCount)
};
statements.Add(JsExpression.Invocation(JsExpression.Member(_systemScript, c.CSharpTypeDefinition.Kind == TypeKind.Interface ? InitGenericInterface : InitGenericClass), args));
}
else
{
statements.Add(JsStatement.Var(typevarName, unnamedCtor));
statements.Add(JsExpression.Assign(JsExpression.Member(JsExpression.Identifier(typevarName), TypeName), JsExpression.String(_metadataImporter.GetTypeSemantics(c.CSharpTypeDefinition).Name)));
AddClassMembers(c, typevarName, statements);
}
}
}
else if (type is JsEnum)
{
var e = (JsEnum)type;
statements.Add(JsStatement.Var(typevarName, JsExpression.FunctionDefinition(new string[0], JsStatement.EmptyBlock)));
statements.Add(JsExpression.Assign(JsExpression.Member(JsExpression.Identifier(typevarName), TypeName), JsExpression.String(_metadataImporter.GetTypeSemantics(e.CSharpTypeDefinition).Name)));
}
if (export)
{
string root = GetRoot(type.CSharpTypeDefinition);
statements.Add(JsExpression.Assign(MakeNestedMemberAccess(name, JsExpression.Identifier(root)), JsExpression.Identifier(typevarName)));
}
return(new TypeOOPEmulationPhase(null, statements));
}
private JsExpression GetBaseClass(ITypeDefinition type)
{
var csBase = type.DirectBaseTypes.SingleOrDefault(b => b.Kind == TypeKind.Class);
if (csBase == null || csBase.IsKnownType(KnownTypeCode.Object) || csBase.IsKnownType(KnownTypeCode.ValueType) || MetadataUtils.IsImported(csBase.GetDefinition(), _attributeStore) && MetadataUtils.IsSerializable(csBase.GetDefinition(), _attributeStore))
{
return(null);
}
return(_runtimeLibrary.InstantiateType(csBase, new DefaultRuntimeContext(type, _metadataImporter, _errorReporter, _namer)));
}
private void AddClassMembers(JsClass c, string typevarName, List <JsStatement> stmts)
{
if (c.NamedConstructors.Count > 0)
{
stmts.AddRange(c.NamedConstructors.Select(m => (JsStatement)JsExpression.Assign(JsExpression.Member(JsExpression.Identifier(typevarName), m.Name), m.Definition)));
}
var defaultConstructor = Saltarelle.Compiler.Utils.SelfParameterize(c.CSharpTypeDefinition).GetConstructors().SingleOrDefault(x => x.Parameters.Count == 0 && x.IsPublic);
bool hasCreateInstance = false;
if (defaultConstructor != null)
{
var sem = _metadataImporter.GetConstructorSemantics(defaultConstructor);
if (sem.Type != ConstructorScriptSemantics.ImplType.UnnamedConstructor && sem.Type != ConstructorScriptSemantics.ImplType.NotUsableFromScript)
{
var createInstance = MetadataUtils.CompileConstructorInvocation(defaultConstructor, null, c.CSharpTypeDefinition, null, EmptyList <ResolveResult> .Instance, _compilation, _metadataImporter, _namer, _runtimeLibrary, _errorReporter, null, null);
stmts.Add(JsExpression.Assign(
JsExpression.Member(JsExpression.Identifier(typevarName), "createInstance"),
JsExpression.FunctionDefinition(new string[0], JsStatement.Block(createInstance.AdditionalStatements.Concat(new[] { JsStatement.Return(createInstance.Expression) })))));
hasCreateInstance = true;
}
}
if (c.CSharpTypeDefinition.Kind == TypeKind.Struct)
{
stmts.Add(JsExpression.Assign(JsExpression.Member(JsExpression.Identifier(typevarName), "getDefaultValue"), hasCreateInstance ? JsExpression.Member(JsExpression.Identifier(typevarName), "createInstance") : JsExpression.FunctionDefinition(EmptyList <string> .Instance, JsStatement.Return(JsExpression.New(JsExpression.Identifier(typevarName))))));
if (_metadataImporter.GetTypeSemantics(c.CSharpTypeDefinition).Type == TypeScriptSemantics.ImplType.MutableValueType)
{
stmts.Add(JsExpression.Assign(JsExpression.Member(JsExpression.Identifier(typevarName), "$clone"), GenerateStructCloneMethod(c.CSharpTypeDefinition, typevarName, hasCreateInstance)));
}
}
stmts.AddRange(c.StaticMethods.Select(m => (JsStatement)JsExpression.Assign(JsExpression.Member(JsExpression.Identifier(typevarName), m.Name), RewriteMethod(m))));
if (MetadataUtils.IsSerializable(c.CSharpTypeDefinition, _attributeStore))
{
string typeCheckCode = MetadataUtils.GetSerializableTypeCheckCode(c.CSharpTypeDefinition, _attributeStore);
if (!string.IsNullOrEmpty(typeCheckCode))
{
var oldReg = _errorReporter.Region;
_errorReporter.Region = c.CSharpTypeDefinition.Attributes.Single(a => a.AttributeType.FullName == typeof(SerializableAttribute).FullName).Region;
var method = MetadataUtils.CreateTypeCheckMethod(Saltarelle.Compiler.Utils.SelfParameterize(c.CSharpTypeDefinition), _compilation);
var errors = new List <string>();
var tokens = InlineCodeMethodCompiler.Tokenize(method, typeCheckCode, errors.Add);
if (errors.Count == 0)
{
var context = new DefaultRuntimeContext(c.CSharpTypeDefinition, _metadataImporter, _errorReporter, _namer);
var result = InlineCodeMethodCompiler.CompileExpressionInlineCodeMethodInvocation(method, tokens, JsExpression.Identifier("obj"), new JsExpression[0],
n => {
var type = ReflectionHelper.ParseReflectionName(n).Resolve(_compilation);
if (type.Kind == TypeKind.Unknown)
{
errors.Add("Unknown type '" + n + "' specified in inline implementation");
return(JsExpression.Null);
}
return(_runtimeLibrary.InstantiateType(type, context));
},
t => _runtimeLibrary.InstantiateTypeForUseAsTypeArgumentInInlineCode(t, context),
errors.Add);
stmts.Add(JsExpression.Assign(
JsExpression.Member(JsExpression.Identifier(typevarName), "isInstanceOfType"),
JsExpression.FunctionDefinition(new[] { "obj" }, JsStatement.Return(result))));
foreach (var e in errors)
{
_errorReporter.Message(Messages._7157, c.CSharpTypeDefinition.FullName, e);
}
}
_errorReporter.Region = oldReg;
}
}
if (MetadataUtils.IsJsGeneric(c.CSharpTypeDefinition, _metadataImporter))
{
var args = new List <JsExpression> {
JsExpression.Identifier(typevarName),
new JsTypeReferenceExpression(c.CSharpTypeDefinition), JsExpression.ArrayLiteral(c.CSharpTypeDefinition.TypeParameters.Select(tp => JsExpression.Identifier(_namer.GetTypeParameterName(tp)))),
CreateInstanceMembers(c, typevarName),
};
if (c.CSharpTypeDefinition.Kind != TypeKind.Interface)
{
args.Add(JsExpression.FunctionDefinition(new string[0], JsStatement.Return(GetBaseClass(c.CSharpTypeDefinition) ?? JsExpression.Null)));
}
args.Add(JsExpression.FunctionDefinition(new string[0], JsStatement.Return(JsExpression.ArrayLiteral(GetImplementedInterfaces(c.CSharpTypeDefinition)))));
stmts.Add(JsExpression.Invocation(JsExpression.Member(_systemScript, c.CSharpTypeDefinition.Kind == TypeKind.Interface ? RegisterGenericInterfaceInstance : RegisterGenericClassInstance), args));
if (c.CSharpTypeDefinition.Kind == TypeKind.Class && c.NamedConstructors.Count > 0)
{
stmts.Add(AssignNamedConstructorPrototypes(c, JsExpression.Identifier(typevarName)));
}
if (c.CSharpTypeDefinition.Kind == TypeKind.Struct)
{
stmts.Add(JsExpression.Assign(JsExpression.Member(JsExpression.Identifier(typevarName), "__class"), JsExpression.False));
}
var metadata = GetMetadataDescriptor(c.CSharpTypeDefinition, true);
if (metadata != null)
{
stmts.Add(JsExpression.Invocation(JsExpression.Member(_systemScript, SetMetadata), JsExpression.Identifier(typevarName), metadata));
}
}
}
private JsExpression GenerateStructCloneMethod(ITypeDefinition type, string typevarName, bool hasCreateInstance)
{
var stmts = new List <JsStatement>()
{
JsStatement.Var("r", hasCreateInstance ? (JsExpression)JsExpression.Invocation(JsExpression.Member(JsExpression.Identifier(typevarName), "createInstance")) : JsExpression.New(JsExpression.Identifier(typevarName)))
};
var o = JsExpression.Identifier("o");
var r = JsExpression.Identifier("r");
foreach (var f in type.Fields.Where(f => !f.IsStatic))
{
var sem = _metadataImporter.GetFieldSemantics(f);
if (sem.Type == FieldScriptSemantics.ImplType.Field)
{
var def = f.ReturnType.GetDefinition();
JsExpression value = JsExpression.Member(o, sem.Name);
if (def != null && def.Kind == TypeKind.Struct && _metadataImporter.GetTypeSemantics(def).Type == TypeScriptSemantics.ImplType.MutableValueType)
{
value = _runtimeLibrary.CloneValueType(value, f.ReturnType, new DefaultRuntimeContext(type, _metadataImporter, _errorReporter, _namer));
}
stmts.Add(JsExpression.Assign(JsExpression.Member(r, sem.Name), value));
}
}
foreach (var p in type.Properties.Where(p => !p.IsStatic))
{
var sem = _metadataImporter.GetPropertySemantics(p);
if ((sem.Type == PropertyScriptSemantics.ImplType.GetAndSetMethods && MetadataUtils.IsAutoProperty(p) == true) || sem.Type == PropertyScriptSemantics.ImplType.Field)
{
var def = p.ReturnType.GetDefinition();
var fieldName = sem.Type == PropertyScriptSemantics.ImplType.GetAndSetMethods ? _metadataImporter.GetAutoPropertyBackingFieldName(p) : sem.FieldName;
JsExpression value = JsExpression.Member(o, fieldName);
if (def != null && def.Kind == TypeKind.Struct && _metadataImporter.GetTypeSemantics(def).Type == TypeScriptSemantics.ImplType.MutableValueType)
{
value = _runtimeLibrary.CloneValueType(value, p.ReturnType, new DefaultRuntimeContext(type, _metadataImporter, _errorReporter, _namer));
}
stmts.Add(JsExpression.Assign(JsExpression.Member(r, fieldName), value));
}
}
foreach (var e in type.Events.Where(e => !e.IsStatic && MetadataUtils.IsAutoEvent(e) == true))
{
var sem = _metadataImporter.GetEventSemantics(e);
if (sem.Type == EventScriptSemantics.ImplType.AddAndRemoveMethods)
{
var def = e.ReturnType.GetDefinition();
var fieldName = _metadataImporter.GetAutoEventBackingFieldName(e);
JsExpression value = JsExpression.Member(o, fieldName);
if (def != null && def.Kind == TypeKind.Struct && _metadataImporter.GetTypeSemantics(def).Type == TypeScriptSemantics.ImplType.MutableValueType)
{
value = _runtimeLibrary.CloneValueType(value, e.ReturnType, new DefaultRuntimeContext(type, _metadataImporter, _errorReporter, _namer));
}
stmts.Add(JsExpression.Assign(JsExpression.Member(r, fieldName), value));
}
}
stmts.Add(JsStatement.Return(r));
return(JsExpression.FunctionDefinition(new[] { "o" }, JsStatement.Block(stmts)));
}
private IEnumerable <JsExpression> GetImplementedInterfaces(ITypeDefinition type)
{
return(type.GetAllBaseTypes().Where(t => t.Kind == TypeKind.Interface && !t.Equals(type) && MetadataUtils.DoesTypeObeyTypeSystem(t.GetDefinition(), _attributeStore)).Select(t => _runtimeLibrary.InstantiateType(t, new DefaultRuntimeContext(type, _metadataImporter, _errorReporter, _namer))));
}
private JsExpression GetMetadataDescriptor(ITypeDefinition type, bool isGenericSpecialization)
{
var properties = new List <JsObjectLiteralProperty>();
var scriptableAttributes = MetadataUtils.GetScriptableAttributes(type.Attributes, _metadataImporter).ToList();
if (scriptableAttributes.Count != 0)
{
properties.Add(new JsObjectLiteralProperty("attr", JsExpression.ArrayLiteral(scriptableAttributes.Select(a => MetadataUtils.ConstructAttribute(a, type, _compilation, _metadataImporter, _namer, _runtimeLibrary, _errorReporter)))));
}
if (type.Kind == TypeKind.Interface && MetadataUtils.IsJsGeneric(type, _metadataImporter) && type.TypeParameters != null && type.TypeParameters.Any(typeParameter => typeParameter.Variance != VarianceModifier.Invariant))
{
properties.Add(new JsObjectLiteralProperty("variance", JsExpression.ArrayLiteral(type.TypeParameters.Select(typeParameter => JsExpression.Number(ConvertVarianceToInt(typeParameter.Variance))))));
}
if (type.Kind == TypeKind.Class || type.Kind == TypeKind.Interface)
{
var members = type.Members.Where(m => MetadataUtils.IsReflectable(m, _attributeStore))
.OrderBy(m => m, MemberOrderer.Instance)
.Select(m => {
_errorReporter.Region = m.Region;
return(MetadataUtils.ConstructMemberInfo(m, _compilation, _metadataImporter, _namer, _runtimeLibrary, _errorReporter, t => _runtimeLibrary.InstantiateType(t, isGenericSpecialization ? _genericSpecializationReflectionRuntimeContext : _defaultReflectionRuntimeContext), includeDeclaringType: false));
})
.ToList();
if (members.Count > 0)
{
properties.Add(new JsObjectLiteralProperty("members", JsExpression.ArrayLiteral(members)));
}
var aua = _attributeStore.AttributesFor(type).GetAttribute <AttributeUsageAttribute>();
if (aua != null)
{
if (!aua.Inherited)
{
properties.Add(new JsObjectLiteralProperty("attrNoInherit", JsExpression.True));
}
if (aua.AllowMultiple)
{
properties.Add(new JsObjectLiteralProperty("attrAllowMultiple", JsExpression.True));
}
}
}
if (type.Kind == TypeKind.Enum && _attributeStore.AttributesFor(type).HasAttribute <FlagsAttribute>())
{
properties.Add(new JsObjectLiteralProperty("enumFlags", JsExpression.True));
}
return(properties.Count > 0 ? JsExpression.ObjectLiteral(properties) : null);
}
private JsExpression GetFieldHashCode(IField field)
{
var impl = _metadataImporter.GetFieldSemantics(field);
if (impl.Type != FieldScriptSemantics.ImplType.Field)
{
return(null);
}
IType type = NullableType.GetUnderlyingType(field.Type);
bool needNullCheck = field.Type.IsReferenceType != false || field.Type.IsKnownType(KnownTypeCode.NullableOfT) || type.Kind == TypeKind.Enum && MetadataUtils.IsNamedValues(field.Type.GetDefinition(), _attributeStore);
JsExpression member = JsExpression.Member(JsExpression.This, impl.Name);
JsExpression result = JsExpression.Invocation(JsExpression.Member(_systemScript, "getHashCode"), member);
if (needNullCheck)
{
result = JsExpression.Conditional(member, result, JsExpression.Number(0));
}
if (type.Kind == TypeKind.Enum && !MetadataUtils.IsNamedValues(type.GetDefinition(), _attributeStore))
{
result = needNullCheck ? JsExpression.LogicalOr(member, JsExpression.Number(0)) : member;
}
else if (type is ITypeDefinition)
{
switch (((ITypeDefinition)type).KnownTypeCode)
{
case KnownTypeCode.Boolean:
result = JsExpression.Conditional(member, JsExpression.Number(1), JsExpression.Number(0));
break;
case KnownTypeCode.Byte:
case KnownTypeCode.SByte:
case KnownTypeCode.Char:
case KnownTypeCode.Int16:
case KnownTypeCode.UInt16:
case KnownTypeCode.Int32:
case KnownTypeCode.UInt32:
case KnownTypeCode.Int64:
case KnownTypeCode.UInt64:
case KnownTypeCode.Decimal:
case KnownTypeCode.Single:
case KnownTypeCode.Double:
result = needNullCheck ? JsExpression.LogicalOr(member, JsExpression.Number(0)) : member;
break;
}
}
return(result);
}
public JsExpression TryDowncast(JsExpression expression, IType sourceType, IType targetType, IRuntimeContext context)
{
JsExpression jsTarget = CompileImportedTypeCheckCode(targetType, ref expression, context, false);
if (jsTarget == null)
{
var def = targetType.GetDefinition();
if (def != null && (!MetadataUtils.DoesTypeObeyTypeSystem(def, _attributeStore) || (MetadataUtils.IsSerializable(def, _attributeStore) && string.IsNullOrEmpty(MetadataUtils.GetSerializableTypeCheckCode(def, _attributeStore)))))
{
_errorReporter.Message(Messages._7702, targetType.FullName);
return(JsExpression.Null);
}
jsTarget = GetCastTarget(sourceType, targetType, context);
}
if (jsTarget == null || IsSystemObjectReference(jsTarget))
{
return(expression);
}
return(JsExpression.Invocation(JsExpression.Member(CreateTypeReferenceExpression(_systemScript), "safeCast"), expression, jsTarget));
}
public JsExpression TypeIs(JsExpression expression, IType sourceType, IType targetType, IRuntimeContext context)
{
var importedCheck = CompileImportedTypeCheckCode(targetType, ref expression, context, true);
if (importedCheck != null)
{
return(importedCheck);
}
var def = targetType.GetDefinition();
if (def != null && (!MetadataUtils.DoesTypeObeyTypeSystem(def, _attributeStore) || (MetadataUtils.IsSerializable(def, _attributeStore) && string.IsNullOrEmpty(MetadataUtils.GetSerializableTypeCheckCode(def, _attributeStore)))))
{
_errorReporter.Message(Messages._7701, targetType.FullName);
return(JsExpression.Null);
}
var jsTarget = GetCastTarget(sourceType, targetType, context);
if (jsTarget == null || IsSystemObjectReference(jsTarget))
{
return(ReferenceNotEquals(expression, JsExpression.Null, context));
}
return(JsExpression.Invocation(JsExpression.Member(CreateTypeReferenceExpression(_systemScript), "isInstanceOfType"), expression, jsTarget));
}
private JsExpression GetCastTarget(IType type, IRuntimeContext context)
{
var def = type.GetDefinition();
if (type.Kind == TypeKind.Enum)
{
var underlying = MetadataUtils.IsNamedValues(def, _attributeStore) ? _compilation.FindType(KnownTypeCode.String) : def.EnumUnderlyingType;
return(CreateTypeReferenceExpression(underlying.GetDefinition()));
}
if (def != null)
{
if (MetadataUtils.IsSerializable(def, _attributeStore) && string.IsNullOrEmpty(MetadataUtils.GetSerializableTypeCheckCode(def, _attributeStore)))
{
return(null);
}
if (!MetadataUtils.DoesTypeObeyTypeSystem(def, _attributeStore))
{
return(null);
}
}
return(GetScriptType(type, TypeContext.GetScriptType, context));
}
private JsExpression GetTypeDefinitionScriptType(ITypeDefinition type, TypeContext context)
{
var sem = _metadataImporter.GetTypeSemantics(type);
if (sem.Type == TypeScriptSemantics.ImplType.NotUsableFromScript)
{
_errorReporter.Message(Saltarelle.Compiler.Messages._7522, type.FullName);
return(JsExpression.Null);
}
if (context != TypeContext.GetScriptType && context != TypeContext.TypeOf && !MetadataUtils.DoesTypeObeyTypeSystem(type, _attributeStore))
{
return(CreateTypeReferenceExpression(KnownTypeReference.Object));
}
else if (MetadataUtils.IsSerializable(type, _attributeStore) && !MetadataUtils.DoesTypeObeyTypeSystem(type, _attributeStore))
{
return(CreateTypeReferenceExpression(KnownTypeReference.Object));
}
else
{
return(CreateTypeReferenceExpression(type));
}
}
public static IList <JsStatement> Process(IMetadataImporter metadataImporter, INamer namer, IAttributeStore attributeStore, ICompilation compilation, IList <JsStatement> statements)
{
var locals = LocalVariableGatherer.Analyze(statements);
var globals = ImplicitGlobalsGatherer.Analyze(statements, locals, reportGlobalsAsUsedInAllParentScopes: false);
var introducedNames = IntroducedNamesGatherer.Analyze(statements, metadataImporter, attributeStore, compilation.MainAssembly);
var renameMap = RenameMapBuilder.BuildMap(statements, locals, globals, introducedNames, namer);
var usedSymbols = new HashSet <string>();
foreach (var sym in locals.Values.SelectMany(v => v) // Declared locals.
.Concat(globals.Values.SelectMany(v => v)) // Implicitly declared globals.
.Concat(renameMap.Values.SelectMany(v => v.Values)) // Locals created during preparing rename.
.Concat(introducedNames.Values.SelectMany(v => v)) // All global types used.
)
{
usedSymbols.Add(sym);
}
statements = IdentifierRenamer.Process(statements, renameMap).ToList();
bool isModule = MetadataUtils.GetModuleName(compilation.MainAssembly, attributeStore) != null || MetadataUtils.IsAsyncModule(compilation.MainAssembly, attributeStore);
var importer = new ImportVisitor(metadataImporter, namer, attributeStore, compilation.MainAssembly, usedSymbols, JsExpression.Identifier(isModule ? "exports" : "$asm"));
var body = (!isModule ? new[] { JsStatement.Var("$asm", JsExpression.ObjectLiteral()) } : new JsStatement[0]).Concat(statements.Select(s => importer.VisitStatement(s, null))).ToList();
var moduleDependencies = importer._moduleAliases.Concat(MetadataUtils.GetAdditionalDependencies(compilation.MainAssembly, attributeStore));
if (MetadataUtils.IsAsyncModule(compilation.MainAssembly, attributeStore))
{
body.InsertRange(0, new[] { JsStatement.UseStrict, JsStatement.Var("exports", JsExpression.ObjectLiteral()) });
body.Add(JsStatement.Return(JsExpression.Identifier("exports")));
var pairs = new[] { new KeyValuePair <string, string>("mscorlib", namer.GetVariableName("_", usedSymbols)) }
.Concat(moduleDependencies.OrderBy(x => x.Key))
.ToList();
body = new List <JsStatement> {
JsExpression.Invocation(
JsExpression.Identifier("define"),
JsExpression.ArrayLiteral(pairs.Select(p => JsExpression.String(p.Key))),
JsExpression.FunctionDefinition(
pairs.Select(p => p.Value),
JsStatement.Block(body)
)
)
};
}
else if (moduleDependencies.Any())
{
// If we require any module, we require mscorlib. This should work even if we are a leaf module that doesn't include any other module because our parent script will do the mscorlib require for us.
body.InsertRange(0, new[] { JsStatement.UseStrict, JsExpression.Invocation(JsExpression.Identifier("require"), JsExpression.String("mscorlib")) }
.Concat(moduleDependencies
.OrderBy(x => x.Key).OrderBy(x => x.Key)
.Select(x => JsStatement.Var(
x.Value,
JsExpression.Invocation(
JsExpression.Identifier("require"),
JsExpression.String(x.Key))))
.ToList()));
}
else
{
body.Insert(0, JsStatement.UseStrict);
body = new List <JsStatement> {
JsExpression.Invocation(JsExpression.FunctionDefinition(new string[0], JsStatement.Block(body)))
};
}
return(body);
}
